Aaeon love



(No Model.)

2 sheets-sheet 1-.

A. LOVE.

THRASHING MACHINE.

Nd. 273,113. Patent.edFeb.27,1883

(NOD-06.61.) 2 Sheets-Sheet '2. A. LOVE.

THRASHING MACHINE. No. 273313. Patented Feb. 27,1883.

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. rte STATES PATENT OFFICE,

AARON LOVE, OF WHITOHURGH TOWNSHIP, COUNTY OF YORK, ONTARIO,

CANADA;

THRASHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 273,113, dated February 27, 1883.

Application filed February 8, 1882. (No model.)

I ject of the Queen of Great Britain, residing at the township of Whitchurch, in the county of York, in the Province of Ontario and Dominion of Canada, have invented certain new and useful Improvements in Threshing-Machines, of which the following is a specification.

The object of the invention is to remove the dust from the thrashing-machine without carrying with it the grain thrashed out of the straw; and it consists essentially in the construction and arrangement of parts, as will be more fully hereinafter set forth, and specifically pointed out in the claim.

Figure 1. is a view showing the exhaust-fan set within a casing and applied to the thrashing-machine between the thrashing-cylinder and revolving heaters. view of the casing containing the exhaust-fan. Fig. 3 is a perspective view of a portion of a thrashing-machine with my improvement.atcached.

As my invention relates purely to the peculiar application of the exhaust-fan to the thrashing-machine at that point where it will be most serviceable, it is not necessary to show in the drawings any more of the machine than that portion to which the exhaust-fan is immediately applied.

A is an ordinary exhaust-fan contained within its casing. This fan is incased within an enlarged casing, B, forming a d List-chamber. This casing may be made of iron, wood, or any other suitable material, and is provided with a perforated or open-slotted bottom, G, and is bolted to the top of the machine, between the thrashingcylinder D and beater'E. An opening in the outer top casing of the thrashingmachine is left for permitting communication between the interior of the thrashing-machine and that of the casing B.

F is a discharge-spout leading from the fan outside of the casing B. This spout may be extended as long as required to carry the dust' discharged by the fan outside of the bearing or some other convenient point remote from the machine.

G is a damper or valve arranged in the side of the casing B.

When the exhaust-fan A is caused to revolve the dust thrown off by the thrashing-cylinder during the process of thrashing will be Fig. 2 is a perspective conveyed, as indicated by arrows, through the perforated or slotted bottom 0 into the dustchamber B, where, entering the center of the exhaust-fanA,it willbedischarged outthrough the spout F to some convenient point where it will not inconvenience the men operating the machine. The grating 0 extends entirely under the casing B, and serves to support the fan-casing independently of the said casingB by means of proper standards, asshown.

While the perforated or slotted bottom 0 will prevent straw and grain from passing into the dust-chamber, the suction-power of the fan may sometimes be greater than is desirable for its satisfactory effect upon the dust, as it might carry with the dust the grain. It is therefore necessary, in order to regulate the suction-power of the fan without affecting its discharging-power. to provide the valve or damper G. By opening the valve and thereby admitting the air into the chamber the power of the suction will be correspondingly limited, and therefore by its use the thrasher will have no difficulty inso regulating the power of the fan as to prevent it carrying away the grain being thrashed;

I am aware of the patent of E. S. Churchinan, dated March 19, 1878, No. 201,331, and I do not therefore claim a suctionfan with. its casing partly inclosed in a separate casing and applied to a thrashing-imichine, my invention differing therefrom in "the use of an outer casing en tirely'inclosing the fan-casing, whereby a suction-fan of ordinary construction may be used, and in providing the outer casing with a valve to regulate suction of the fan.

What I claim is The combination, with the heater and cylinder of a thrashing-machine and the usual casing thereof, of the casing A, containing a suction-fan, the casing B, entirely inclosing the casing A, and provided with an open bottom, an opening at one side for the passage of theeXit-pipe of the fan, and a valve for regulating the suction of the fan, and the slatted bottom G, extending entirely under the casing B, and serving to support the fan-casing independently of the casing B, all constructed and Operating substantially as shown and described, and for the purpose specified.

AARON LOVE. Witnesses G. W. BALDWIN, H. H. WARREN. 

